Sorry to belabor the point but let me give an example. My first ETS occured in Germany and I re-enlisted to go from Signal Company to a "Line" company.
My second ETS occured in Panama and I was a SCUBA/SAR instructor and I re-enlisted.
My final ETS occured at Ft. Bragg during the post-war doldrums and I hung it up.
Ironically, since I was LA qualified and a member of the 7th I just missed the involvement in LA that may have caused me to re-enlist.
Notice I enlisted for assignments and not $$$.